The sonar data were collected and recorded in realtime on HD by direct interfacing of the sonar processor 81P to the PDS-2000 software. In addition two data sets were generated and stored on separate computer for backup on HD and CD/DVD. The PDS-2000 was able to build a 20 m DTM during the acquisition of the entire surveyed area. The existing multibeam datasets will therefore be used for an up-to-date regional bathymetric compilation. Backscatter data were recorded in the XTF format, alongwith navigational and .all files, and will be processed post-cruise.